Does the universe have a space limit? Is there space outside the universe?

The universe is finite and unbounded, it was created 13.7 billion years ago, because the universe expands faster than the speed of light, so the scale of the universe is more than 13.7 billion light years. The universe is a collective term for all space and time, and we cannot ask "what is outside of space" or "what is outside of time", so it is pointless to discuss outside the universe.

Responsible, the question you ask, there is no answer in the physics community today.

Refer to Stephen Hawking's A Brief History of Time

Well....Your question is very special! I can't explain it for you at the moment....

Infinity....Now there is no way for human beings to know, there is only speculation, and no one will know in the future, the universe has bred us, and it is impossible for him to give us such a developed brain to see him through! We can only think that the universe is infinite! Because the human brain is not yet capable of imagining the size of the universe....

A better explanation, I think, is Einstein's: the universe is bounded and infinite....For example, if you have a blank piece of paper, you can easily get to its boundary, but if you roll it up into a ball, you can't get to the end of it, even though it's still bounded....By analogy, the same is true of our space: you can't get to the end of it, but it's bounded.

I feel that the comparison on the third floor is right, the universe is infinite!

What is it like beyond the universe? Scientists: There are only three situations that are closest to the truth!

The vast universe is full of too many unknowns, and people are full of fear of the universe, but human desires have never contracted because of fear, we are accelerating our pace step by step, just want to know more about the universe, but the more we understand, the more confused, because we find that human beings are too small, the boundary of the universe alone makes us out of reach, and our technology seems to never reach the boundary of the universe, but this does not prevent us from guessing the boundaries of the universe.

It is said that it is a guess, of course, it can not be guessed, but a well-founded guess, at present, scientists provide three more reliable guesses, which are the results of scientists integrating many guesses, which are generally the most widely known, but also the most scientifically proven, let's take a look!

The first type: outside the universe is a piece of nothingness, that is, the unknown, nothing exists in the void space, the universe in science, is only what we can observe at present, everything within this space, this scientific basis is the hypothesis of the universe, because the universe is a void before the universe, so the universe should not be the appearance of the universe?

The second is that there are other universes outside the universe. This view is also a generally recognized point of view, many scientists believe that the universe has a clear boundary, but the universe we are currently in is too big, so it is difficult to observe, or it is possible to be in another dimension, about this, scientists have found a lot of evidence through cosmic microwave radiation, including even the friction marks of the universe being hit by another universe, plus the development of quantum mechanics, all make us more convinced of the other universe.

The third type: the last one is a terrible speculation, which is based on the speculation of civilization, scientists think that maybe everything we have is arranged, outside the universe is the laboratory of advanced civilizations, our universe is like a test field, everything here is made by more advanced civilizations, so this universe will be so regular, in fact, although this speculation is terrible, but it is not impossible.

The universe is the sum total of all time and space, and there is no universe outside of it. If you insist on placing an observer outside the universe, you are placing him outside of time and space from the very beginning.

It's a question of the level of logic, the universe may be positive curvature or zero curvature or negative curvature, the positive curvature universe is finite but has no boundary, 0 curvature and negative curvature universe is infinite and has no boundary. So, the universe has no boundaries and no end.

Actually, it was called before01bffe806cIt's been said very clearly, but you can't understand it, and you say that people don't think. Then I'll put it in a more layman's terms, I hope you think about it seriously:

Even if the universe is really only 930 light-years, then 100 billion light-years away from us, 1,000 billion light-years away, is still in the universe.

What is truly beyond the universe is beyond the imagination of human beings.

Suppose the (observable) universe is a separate celestial body, or a separate galaxy, and then suppose it is 100 billion light-years. Then there are infinite universes 100 billion light-years away. The universe is not only composed of galaxies generated by matter and space generated by magnetic fields, but the ratio of matter and space is fixed.

Then the connection between the universe and the universe, because everything cannot have an ideal state, the shape of the universe can not be an ideal geometry, so that the connection place is a turbulent cosmic soft wall, that is, the space of the junction is unstable, it is the space that violates each other, and only in the dynamic of mutual aggression can each maintain the total amount of their respective space unchanged. This dynamic energy does not exist in any matter, let alone place a stationary person. Because matter is surrounded by magnetic fields, that is, matter must be in the middle of space, and the junction is fighting for space through dynamics, so matter can only be in their respective spaces.

Why is there a cosmic soft wall, because if the universe is not occupied by matter, it is occupied by space, and there is no third party to occupy it, then the small universe, that is, the boundary of the visible universe generated by independent galaxies, it is also impossible to have a third party to occupy it, so it has to squeeze with the neighboring small universe by squeezing each other, so that the large universe can be free of a third party. So whether the cosmic soft wall will affect the evolution of the small universe, the answer is definitely no. Because matter will have enough distance from the soft wall of the universe under the action of gravitation.

That is, the cosmic soft wall is like the outer skin of a soft-shelled egg, the galaxy is like the yolk, and the distance between the galaxy and the cosmic soft wall is like an egg white. Therefore, there is only material or space in the world, and there is no campsite for "little three".

Space-time came into existence after the birth of the universe, so there is no space-time outside the universe.

However, there should be many universes, and there is space in other universes.

Your space at 100 billion light-years does not exist – that is, there is no space outside the universe, space is only within the universe.

First of all, you are wrong. Not the entire universe is 93 billion light-years. To be precise, it is the size of the observable universe, a spherical region centered on us and about 93 billion light-years in diameter.

In other words, the universe we can see is a sphere with a diameter of 93 billion light-years. We don't know how big the universe is outside of this observable universe. But according to some observations.

The 93 billion light-years we can see are quite flat, so it can be speculated that beyond these 93 billion light-years, the universe is still very large, and probably infinite. If the size of the entire universe is greater than 100 billion light-years, 100 billion light-years away, space is meaningful to himself. In the same way, time and space are one, and time is also meaningful to him.

It's just none of us, we can't see him, we can't get to him, unless we can break the limit of the speed of light. Personally, I believe that space and time are the background and carrier of the existence and change of things. If the universe is finite, there is probably nothing that is compatible with our universe outside the universe, so you can't put a person outside the universe.

But at the moment, we don't know anything about that.

This may seem contradictory in the blink of an eye, but how do we make sense of it? The universe is not infinite, this has been proven by modern physics, and we have understood that the universe we are in actually began with the singularity of the big **, and then the universe had time. Space and time are inseparable, and there is no point in understanding their existence alone.

Subsequently, the universe continued to expand in time, and so far, we know from observations that the universe is still in the process of expansion, and there is no tendency to stop and contract. It follows that our universe is not infinite, nor is it uniform, in fact it is constantly expanding and expanding. The point he begins with is not a point in the material sense, but a singularity without the concept of space and time, where everything that our world understands is meaningless.

But at the same time, we should also know that the universe has no boundaries, and we cannot understand the universe by the boundaries of our traditional concepts. That's why the universe is finite but unbounded.

The universe exists in the same way, in three-dimensional space, the universe is unbounded, and when you think you are running to the distant boundary of the universe, you are actually just going around in circles in a curved space-time, so you can never discover the boundary of the universe. You will not be able to find the edge of the earth as if you were following the curved surface of the earth to seek the edge of the earth.

However, when we jump out of the three-dimensional space of reality and stand in the fourth dimension or even higher dimensions, we can easily find that this universe is limited, just like we can see the earth from space.

It is not difficult to see that if we wander on the surface of the earth to find the boundary, it is tantamount to asking for a fish, but once we understand this and use the spaceship to leave the surface of the earth, everything becomes clear, so to speak, we left the second dimension at that time and moved to the third dimension, so we easily discovered the secrets of the earth. In the same way, when we find another way to say goodbye to the three-dimensional space and move to a higher dimension, we immediately leave the universe from the point where we are and finally see the truth of the universe. This method may be the wormhole described by Hawking, or maybe the answer lies in the naturally occurring black holes in the universe, where some singularities are located.

So is it possible to imagine that there are countless other universes outside of our universe, but their existence is not in the three-dimensional space of our image, but multi-dimensional, beyond our visual impression.

Leaving the shackles of the earth's surface, we found that there are countless earths in the world, and leaving the shackles of the three-dimensional universe may make us understand that in this world, our universe is not lonely.

Therefore, in order to understand the so-called universe, we must ask human beings to transcend our current universe, which cannot be done under the current conditions of technology and understanding, so we are all imagining and exploring.

The word universe is used by us in three senses.

The first usage refers to time and space, then, space is infinite and has no boundaries.

The second usage refers to the material structure that expanded to the present day after the universe was large, then, this universe is a ball that expands violently at the speed of light, has a boundary, and its size is limited.

If you stand outside this ball, you will see that there are many balls in addition to our ball.

The third usage is to refer specifically to the extent of what we can see. As mentioned earlier, the ball we are in is expanding at the speed of light, even if this is a big watermelon, we are a seed in it, and it is not in the center, then, for us, the constellations around us are far away from us, but on our side, basically their light can reach the earth, but there is nothing beyond the watermelon skin, so there is a boundary, the other side of the ball, closer to the edge, leaves us faster than the speed of light, so their light can never reach the earth, we have it and can't see it.

There is no space and no time around.

We can't imagine it.

It's a "nothing" huge energy that produces space and time.

Some say that this point is not a point that actually exists either.

Rather, it is a "singularity" in the theoretical sense

The universe came into being because of a song (theology).

Now I find that it is indeed because of a wave, the wave with super energy, maybe it is the sound wave of the gods, who knows how to pinch, I think it is a wave of high dimensions, my inference is that a butterfly in the Amazon flapped its wings, and then the wave generated passed through a different dimensional channel halfway, and after several transformations, it reached the source of time generation, and transmitted back to the "singularity" from the high dimension, causing a big **.

The universe is the general term for all things, the unity of time and space. The universe is a material world, which exists objectively and does not depend on human will, and is in constant motion and development, with no beginning and no end in time, no boundary and no end in space. The universe is diverse and unified; diversity in the diversity of material manifestations; Unity lies in its materiality.

There is no space and no time around.

We can't imagine it.

It's a "nothing" huge energy that produces space and time.

Some say that this point is not a point that actually exists either.

Rather, it is a "singularity" in the theoretical sense

The universe was created because of a song that has now been discovered, and it is indeed because of a wave, and the wave with super energy may be the sound wave of God.

Who knows pinch, I think it's a wave of high dimensions, my inference is that a butterfly in the Amazon flapped its wings, and then the wave generated passed through a different dimensional channel halfway, and after several transformations, it arrived at the source of time, and passed back to the "singularity" from the high dimension, causing a big **.